ALL ENGELHARD is pleased to welcome visitors to our Leadville Mine Development Company Definitive Page. While our focus is clearly Engelhard, we recognize that many Engelhard bullion collectors also collect other bars and ingots. As such, we appreciate the opportunity to present additional collections and look forward to your thoughts and input!
| EXAMPLE | OBVERSE | REVERSE | COMMENTARY | SERIAL | ESTIMATED MINTAGE |
 | [LEADVILLE][1-TR. OZ.] [.999] [SILVER][COLORADO] | Pressed Finish | 1oz fantasy round produced by Mike Dugan of Empire Colorado. Please review the June, 1981 Token and Medal Society article and production summery below for additional information.  | Serial Absent | <25 |
 | [LEADVILLE][1-TR. OZ.] [.999] [SILVER] [18976] [COLORADO] | Pressed Finish | 1oz fantasy round produced by Mike Dugan of Empire Colorado. Please review the June, 1981 Token and Medal Society article and production summery below for additional information. | 18976 | <50 |
 | [Serial Number] [.999] [LEADVILLE COLO.] [3oz 1D] | Cast Finish | 3oz ingot produced by Leadville Mine Development Company of Leadville, Colorado. | A84 A85 | <100 |
 | [8.65] [LEADVILLE COLORADO] [.999] | [55] | 8.65oz ingot produced by Leadville Mine Development Company of Leadville, Colorado. | 55 | <100 |